package com.lqq.config;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/*实现WebMvcConfigurer接口，扩展MVC功能*/
public class LoginHandlerInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        Object user = request.getSession().getAttribute("user");
        if ( user != null) {
            return true;
        }
        request.setAttribute("msg","没有权限请先登录！！！");
        request.getRequestDispatcher("/index.html").forward(request,response);
        return false;
    }
}
